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Thanks for all the responses. Some say yes and some say no. I know a couple racers at my track have ran the 3.79 crank for years with good luck with stock blocks, but they are not available any more unless you buy the top end cranks. Our plan was to put the pro gram billet caps on, 1/2 fill, 13-1 compression and roller cam around 650 to 700 lift. My only concern was with the 4" arm, the increased torque made on the block could be an issue long term.



















Tom Molnar has that crank available.




Do you have a contact for him? Not sure who he is.